An acronym meaning to:Comment Like And Never Talk
It was invented in Long Island New York
It can be used interchangably with the term creepingTo clant you must talk to girls only on facebook, this includes likeing every one of their pictures and statuses bu you never meet them in person.

I go on facebook and clant on so many girls.
Alex:I only talk to girls with 300+ likes on their profile pictures.
Jason:You clant so hard
Alex:Yeah bro I invented clanting. Im a facebook legend.